CN1628399A - Dual band patch bowtie slot antenna structure - Google Patents
Dual band patch bowtie slot antenna structure Download PDFInfo
- Publication number
- CN1628399A CN1628399A CNA028094220A CN02809422A CN1628399A CN 1628399 A CN1628399 A CN 1628399A CN A028094220 A CNA028094220 A CN A028094220A CN 02809422 A CN02809422 A CN 02809422A CN 1628399 A CN1628399 A CN 1628399A
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- China
- Prior art keywords
- antenna
- dual
- oscillator
- bowknot
- aerial oscillator
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q13/00—Waveguide horns or mouths; Slot antennas; Leaky-waveguide antennas; Equivalent structures causing radiation along the transmission path of a guided wave
- H01Q13/10—Resonant slot antennas
- H01Q13/106—Microstrip slot antennas
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
- H01Q1/38—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith formed by a conductive layer on an insulating support
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
- H01Q5/30—Arrangements for providing operation on different wavebands
- H01Q5/307—Individual or coupled radiating elements, each element being fed in an unspecified way
- H01Q5/342—Individual or coupled radiating elements, each element being fed in an unspecified way for different propagation modes
- H01Q5/357—Individual or coupled radiating elements, each element being fed in an unspecified way for different propagation modes using a single feed point
- H01Q5/364—Creating multiple current paths
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q9/00—Electrically-short antennas having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements
- H01Q9/04—Resonant antennas
- H01Q9/0407—Substantially flat resonant element parallel to ground plane, e.g. patch antenna
Abstract
The present invention discloses a combination patch antenna element and bowtie-shaped slot antenna element together disposed upon a first major surface of a dielectric element. The bowtie-slot antenna element is defined upon the dielectric element within a boundary of the patch antenna element. The bowtie-slot antenna element defines a first antenna electrical resonance frequency characteristic, and the patch antenna element defines a second antenna electrical resonance frequency characteristic. The combination patch antenna element and bowtie-shaped slot antenna element are provided in relation to a ground plane element, such as provided by a printed wiring board of a wireless communications device. An additional optional feature of the antenna includes a plurality of conductive pattern enhancement elements disposed on an opposite side of the dielectric element.
Description
Technical field
The present invention relates to a kind of antenna element that is applicable to the wireless transmission of simulation and/or numerical data, more precisely, relate to and under double frequency-band, to work and to be characterised in that the microwave transmission strap (patch) that all has high-gain in each frequency band and the combination of bowknot slot aerial radiant element (radiating element).
Background technology
Need a kind of improved antenna element, it can provide list and/or two waveband response, and is easy to be combined in the little radio communication device (WCD).The restriction of size is extended to the radio component that uses in the products such as influence such as mobile phone, personal digital assistant, pager.For the radio communication device that requires the two waveband response, problem is more complicated.Antenna element is arranged among the WCD, all very crucial for the overall appearance and the performance of device.
The antenna element that is suitable for the printed circuit manufacturing technology is widely known by the people, and is applied in radar, satellite communication and other the current systems.In these antenna parts, usually use the lead realized with the printed circuit conductor formula or radiation diagram to or transmit radio-frequency (RF) energy from antenna oscillator.
A kind of known antenna configuration is " sheet " antenna.This antenna can be made up of selected printed circuit conductor zone, and is in end points or other selected node places along the radio frequency conductor based on the physical size of resonance.Find that chip aerial has some limitation; Main limitation is the finite bandwidth capacity.The chip aerial bandwidth usually only spreads all over a few percent of Antenna Design frequency, and has increased the difficulty of wide spectrum communication or the application of this antenna multiple systems.By bowknot slot aerial combination, improved chip aerial among the present invention, believed that the present invention provides required increase for the antenna family that can be used for radio communication device chip aerial and selected additional shape.
Summary of the invention
The invention provides the combination of a kind of microwave transmission strap and bowknot slot aerial radiant element, can be operated in double frequency-band and each frequency band and all have high-gain (7-10dBi).Its supplementary features comprise that each frequency band has fabulous bandwidth (surpassing 10%), and compare with typical sheet or typical bowknot slot aerial, and performance enhancing and radiation diagram distortion are less.This antenna assembly for example can be used for, as antenna for base station, or micro unit, or the accessing points station antenna, be used for such as cell phone, PDA other devices of the radio communication device of kneetop computer or employing radio antenna.Another special advantage of the present invention is that single public feed (feed) is used for the ability of two frequencies.
Can use known printed circuit board (PCB) manufacturing technology and technology to make radiating element of antenna.In one embodiment, have on the dielectric material printed circuit board (PCB) of two first type surfaces or side one and form radiating element of antenna.This printed circuit board (PCB) has copper coating on one or two surface of dielectric material.In use, corresponding relatively ground plane is provided with this antenna.On first relative, can limit and from the conductive surface etching bow-tie shape selectively of this sheet material with ground plane.On second, can being provided with randomly, the antenna radiation pattern of conduction strengthens element.In other embodiments, other manufacture methods of electric conducting material are adopted in use on dielectric material, as plating on non-conducting material, gas deposition or plasma-deposited electric conducting material, also can realize this antenna assembly, perhaps also can use post forming (two-shot molding) to make by other manufacture methods of selecting plating or those skilled in the art to know or develop.
In a most preferred embodiment (as shown in drawings), antenna of the present invention is as the two waveband antenna for base station, to cover two frequency bands, i.e. and GSM (880-960) MHz and 3GUMTS radio frequency band (1.92-2.17) GHz.In other specific embodiments, those of ordinary skills need not a large amount of experiments just can realize the present invention, pass through scaled size, so that two ISM frequency bands (2.4 and 5.8GHz) to be provided, perhaps constitute and be operated under SIM (2.4GHz) and two frequency bands of UNII (5.3GHz) the perhaps useful combination of other of frequency band.In either case, all use single feeder line to provide feed, and can work individually or simultaneously for two frequency bands.In one embodiment, the present invention can separate wave band by diplexer or other method as known in the art as the dual-band antenna that combines with the multiband broadcast receiver.In another embodiment, any one single wave band that this antenna can be used for being provided, and be easy to switch to another frequency band from a frequency band, need not to change.
Can realize the operating frequency of specific antenna embodiment by following manner; Mainly by size " D " decision of chip aerial part, as shown in Figure 1, and more the high band operation characteristic mainly strengthens the size of component decision by bowknot slot and dorsal part antenna radiation pattern to low-frequency band.
The present invention can also be combined in the antenna structure array, strengthening directivity and gain, and as shown in Figure 6 this class antenna oscillator array can with the common network integration of feeding.
One object of the present invention is to provide a kind of dual-band antenna device with wall scroll feeder line.
Another object of the present invention is to provide a kind of each frequency band all to have the dual-band antenna device of wide bandwidth (10% magnitude).
Another object of the present invention is to provide a kind of each frequency band all to have the dual-band antenna device of high-gain (7-10dBi magnitude).
Still a further object of the present invention is to provide a kind of dual-band antenna device, wherein can visit two wave bands simultaneously.
The further purpose of the present invention is to provide a kind of dual-band antenna device, wherein can be separately and in two wave bands of alternation any one.
According to following explanation, claim and accompanying drawing, will understand the other objects and features of the invention.
Brief Description Of Drawings
Fig. 1 a represents the perspective view of first of the microstrip antenna radiant element of one embodiment of the invention.
Fig. 1 b is the detailed perspective view of antenna of the present invention among Fig. 1 a.
Fig. 2 represents the perspective view of second of the microstrip antenna radiant element of one embodiment of the invention.
Fig. 3 represents the perspective view of one embodiment of the invention, and expression is arranged on the radiant element that ground plane is above and be connected with coaxial feeder system.
Fig. 4 is for being that the microstrip antenna of the present invention of feature is the VWSR curve of function with the frequency with WCDMA and European cell phone wave band.
Fig. 5 is for being the polar diagram of gain characteristic of the microstrip antenna radiant element most preferred embodiment of the present invention of feature with WCDMA and European cell phone wave band.
Fig. 6 is the perspective view of another embodiment of the present invention, illustrates to be arranged near the ground plane and a plurality of sheet/bowknots-slot radiation element that is connected with common feeder system.
Most preferred embodiment
Fig. 1 is the enlarged perspective according to antenna structure 10 of the present invention.As from Figure 1A as can be seen, antenna of the present invention has the physical features of chip aerial and bowknot slot aerial simultaneously.Antenna 10 comprises a dielectric substrate element 8, is provided with the printed circuit board (PCB) of conducting element such as it.The ground plane 6 that is connected with Wireless Telecom Equipment is provided with antenna 10 relatively.Ground plane 6 can be independent conducting element, perhaps can comprise all or part ground plane of the printed substrate of wireless device.According to the antenna 10 that size shown in Fig. 1 constitutes, provide to cover two cell phone wave bands the i.e. dual band frequencies of GSM (880-960) MHz and 3G UMTS wave band (1.92-2.17) GHz response.Referring to Fig. 4.Antenna shown in Fig. 1 can be used for sending and receiving, i.e. the electric energy of inflow or outflow antenna can be expected.
Can use the antenna 10 among printed circuit technique realization Fig. 1, and this antenna 10 comprises the electrically insulating base 8 with first and second first type surfaces 12 and 13.On first first type surface 12, form and be of a size of 5.00 inches laminated structures 16 that multiply by 5.00 inches conduction.The laminated structure 16 of this conduction is an electric conducting material, and can be for being configured in the copper coating of electroplating on the printed substrate.The laminated structure 16 of this conduction is the radiant element of first wave band.In the border of this laminated structure 16, the second wave band radiant element 14 of bow tie is set.This bowknot slot aerial oscillator 14 can be regarded the no conductor part of the laminated structure 16 of this conduction as, and is included within the laminated structure 16 whole borders.
The substrate 8 of Fig. 1 antenna can be by making such as the material of Duroid .Other materials except that Duroid can be as the antenna substrate of Fig. 1 when the different electricity of needs, physics or chemical property.Known to electricity and field of antenna technical staff, if do not regulate by the change in other parts of compensation antenna, then this variation can cause that electrical properties changes.
Conducting element 16 among Fig. 1 can be by the electric conducting material manufacturing such as aluminium, gold, silver, copper and brass or other metals, but for most of purposes of antenna, preferably copper or form alloy with other materials or be coated with the copper of other materials.According to one aspect of the invention, in printed circuit field normally used, when making antenna, preferably use copper and based on the copper removal technology of photoetching (photographic-based).
Fig. 1 a and 1b represent first 12 of a double-side type microstrip chip antenna radiant element 10, are characterised in that etching has bow tie slot 14 in this conductive surface of first 16 of antenna 10.The gap 28 that antenna electric feedback device 18 strides across between bowknot part 24 and 26 zone of convergence mid points 20 and 22 is fixed.Bowknot part 24,26 is compared with the rectangle slot aerial, and additional bandwidth is provided.The size in gap 28 is about 0.1 inch.In the embodiment shown, feeder line 18 is a coaxial cable, has interior coaxial cable part 30 that is fixed in convergent point 20 and the exterior shield grounded part 32 that is fixed in the coaxial cable of convergent point 22.By the traditional welding technology, can be fixed on the conductive surface 16 at point 20 and 22 places respectively with shaft portion 30 and 32.Perhaps, can use microstrip transmission line (as shown in Figure 6) to form this feeder system, perhaps those skilled in the art's other feeder systems of knowing or developing include but not limited to direct feeder system and electric capacity feeder system.
Fig. 2 represents second 13 of these microstrip chip antenna radiant element 10 preferred embodiment dielectric sheets 8.Conducting element 44 and 46 is optional, and can be arranged on second 13 as radiation pattern enhancing element.Element 44 and 46 and 10 first 12 of aerial radiation oscillator devices on bowknot part 24 and 26 corresponding, and be oppositely arranged.Can change the size and dimension that antenna pattern strengthens element 44 and 46, so that regulate the antenna performance radiation diagram.Shown in a most preferred embodiment in, given size and position are to produce enhancement mode antenna performance radiation diagram.As shown in Figure 2, pattern enhancement elements 44 and 46 position may be relevant with the conductive edge of bowknot slot aerial oscillator 14 on the back side 12.Can also on second 42 of antenna assembly 10, choose wantonly another conducting element 48 is set.Conducting element 48 when being arranged on second 42 relative with first gap 28, can be convenient to realize impedance matching.Shown in the size and dimension of conducting element 48 about 50 ohm input impedance can be provided.The change of conducting element 48 positions, size and/or shape can change the input impedance of antenna oscillator 10.
Fig. 3 represents an embodiment of radiant element 10 of the present invention, is arranged on ground plane more than 6, and combines with coaxial feeder 18.In operating frequency range, the minimum ground plane 6 that obtains antenna 10 best effort under low frequency is of a size of λ/2 * λ/2.In the embodiment in figure 1, ground plane 6 is about 6 square inches.The external shield 32 of coaxial cable is connected in 10 operations of ground connection tie point 22 places and radiant element.As mentioned above, interior feeder line 30 is operated with the tie point 20 of feeding and is connected.Interior feeder line 30 comes from suitable wireless set parts, is used for this device (not shown) of suitable operation.The external shield 32 of coaxial feeder 18 also is connected such as operating with ground plane 8 by welding.Just as is known to the person skilled in the art, also can adopt the feeder system of other type.
Fig. 4 represents frequency-voltage standing wave ratio (VSWR) curve of antenna illustrated in figures 1 and 2.The longitudinal axis of Fig. 4 is represented VSWR.
Fig. 5 comprises with WCDMA and European cellular telephone band being the polar diagram of gain characteristic of the microstrip antenna radiant element most preferred embodiment of the present invention of feature.
Fig. 6 represents another embodiment of the present invention, has a plurality of bowknot slots of combining and the chip aerial oscillator 10 that are arranged on the single dielectric substrate 8.Identical with the embodiment of Fig. 1-2, the gap 28 that each antenna oscillator 10 strides across bowknot element 14 promptly in the position 20 and 22 places fed.This structure of feeding can be the microstrip transmission line structure 50 that links to each other with signal port 52.The structure of perhaps feeding also can include but not limited to coaxial line etc. for general.
Though equipment described herein and method have constituted most preferred embodiment of the present invention, should be appreciated that the equipment or the method that the invention is not restricted to this definite type, and the condition that this is in the scope of the invention that does not depart from the claims qualification can change.Technical staff for field involved in the present invention, according to herein instruction, give may and explanation, be easy to draw other aspects of the present invention and advantage, and the modification of unsubstantiality or additional, above-mentioned full content all meets the spirit and scope of the invention that each claims limits and particularly points out significantly.Accompanying drawing is used to illustrate one or more execution mode of the present invention, have no intention to limit the scope of the invention, as radiotechnics, the antenna science and technology, and the technical staff is common in antenna System Design, operation and the manufacturing field understands, and the present invention should be wide limits and with reference to the scope of full content to claims.
Claims (16)
1. dual-band antenna parts that are used for radio communication device, described dual-band antenna parts comprise:
One with the operation of this radio communication device on the ground plane spare of the conduction that is connected;
One is arranged on the dielectric element that is essentially the plane apart from this ground plane spare a distance;
One along the chip aerial oscillator (element) that is arranged on towards the direction of this ground plane spare on this dielectric element first first type surface; With
One bowknot slot aerial oscillator, be limited in the chip aerial oscillator border on this dielectric element, described bowknot slot aerial oscillator has an interstitial structure in a narrow zone, described interstitial structure has a pair of relative face, one of them face is connected with signal conductor conduction, another side is connected with this ground plane spare conduction, and wherein this bowknot slot aerial oscillator has first antenna electrical resonance frequency characteristic, and this chip aerial oscillator has second antenna electrical resonance frequency characteristic.
2. dual-band antenna parts as claimed in claim 1, wherein this chip aerial oscillator is generally rectangle.
3. dual-band antenna parts as claimed in claim 1, wherein this first electrical resonance frequency characteristic comprises at least two different resonance frequencys with this second electrical resonance frequency characteristic.
4. dual-band antenna parts as claimed in claim 3, wherein said two different resonance frequencys are GSM (880-960) MHz and 3G UMTS (1.92-2.17) GHz.
5. dual-band antenna parts as claimed in claim 3, wherein this conduction sheet antenna oscillator that is generally rectangle is square, and its size is selected according to operating frequency of antenna.
6. dual-band antenna parts as claimed in claim 1, wherein said antenna element be arranged to array a plurality of same antenna parts one of them.
7. dual-band antenna parts as claimed in claim 1 also comprise:
Along a plurality of conductive pattern enhancement elements that are arranged on away from ground plane spare direction on dielectric element second first type surface.
8. dual-band antenna component manufacturing method comprises step:
One radio communication device with aground plane structure and signal generation/receiving-member is provided;
The one dielectric sheet element apart from this aground plane structure certain distance setting is provided;
Provide one along the chip aerial oscillator that is arranged on towards this ground plane spare direction on this dielectric element first first type surface; And
The one bowknot slot aerial oscillator that is limited in this chip aerial oscillator border on this dielectric element is provided, and has a pair of internal signal coupling position near a narrow zone of this bowknot slot aerial oscillator;
The described bowknot slot aerial oscillator that is coupled at described a pair of internal signal coupling position place, one of them signal coupling position is connected with signal conductor conduction, and another signal coupling position conducts electricity with this aground plane structure and is connected;
The physical size of tuning this chip aerial oscillator is with resonance under first resonance frequency in working band; And
The physical size of tuning this bowknot slot aerial oscillator is with resonance under second resonance frequency in working band.
9. dual-band antenna component manufacturing method as claimed in claim 8 also comprises step:
Along on this dielectric element second first type surface, a plurality of conductive pattern enhancement elements being set away from the aground plane structure direction; And
One or more physical size in tuning described a plurality of conductive pattern enhancement elements is to provide the antenna performance of enhancing.
10. the sheet oscillator of two waveband combination and the antenna equipment of bowknot slot oscillator comprise the combination of following elements:
One dielectric sheet element;
One is arranged on the chip aerial oscillator on this dielectric sheet element, and described chip aerial oscillator has the physical size of about half wavelength, and described chip aerial oscillator has first antenna electrical resonance frequency characteristic; And
One is arranged on the bowknot slot aerial oscillator in this chip aerial oscillator, and has second antenna electrical resonance frequency characteristic, described bowknot slot aerial oscillator has a kind of interstitial structure in a narrow zone, described interstitial structure has a pair of relative face, one of them face is connected with signal conductor, and another side is connected with the earthing conductor conduction.
11. dual-band antenna equipment as claimed in claim 10 also comprises:
The antenna radiation pattern that is arranged on a plurality of conductions on this dielectric sheet element one interarea strengthens element, and it is relative with described bow tie slot aerial oscillator with described chip aerial oscillator.
12. dual-band antenna equipment as claimed in claim 10, wherein this chip aerial oscillator is generally rectangle.
13. dual-band antenna equipment as claimed in claim 10, wherein this first electrical resonance frequency characteristic comprises at least two different resonance frequencys with second electrical resonance frequency characteristic.
14. dual-band antenna equipment as claimed in claim 13, wherein said two different resonance frequencys are GSM (880-960) MHz and 3G UMTS (1.92-2.17) GHz.
15. dual-band antenna equipment as claimed in claim 10, wherein said antenna equipment be arranged to array a plurality of same antenna equipment one of them.
16. dual-band antenna equipment as claimed in claim 15, wherein said a plurality of same antenna equipment are connected with the single port of feeding.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US09/828,533 | 2001-04-06 | ||
| US09/828,533 US6429819B1 (en) | 2001-04-06 | 2001-04-06 | Dual band patch bowtie slot antenna structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1628399A true CN1628399A (en) | 2005-06-15 |
| CN100474695C CN100474695C (en) | 2009-04-01 |
Family
ID=25252086
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB028094220A Expired - Fee Related CN100474695C (en) | 2001-04-06 | 2002-04-04 | Dual band patch bowtie slot antenna structure |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US6429819B1 (en) |
| KR (1) | KR20030090716A (en) |
| CN (1) | CN100474695C (en) |
| WO (1) | WO2002082667A2 (en) |
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| JPH0685520A (en) * | 1992-09-03 | 1994-03-25 | Sumitomo Metal Mining Co Ltd | Print antenna |
| GB2292482A (en) * | 1994-08-18 | 1996-02-21 | Plessey Semiconductors Ltd | Antenna arrangement |
| KR0140601B1 (en) | 1995-03-31 | 1998-07-01 | 배순훈 | Polarization receiver |
| US5608413A (en) * | 1995-06-07 | 1997-03-04 | Hughes Aircraft Company | Frequency-selective antenna with different signal polarizations |
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| JP3340374B2 (en) * | 1998-01-27 | 2002-11-05 | 株式会社東芝 | Multi-frequency antenna |
| US6198437B1 (en) | 1998-07-09 | 2001-03-06 | The United States Of America As Represented By The Secretary Of The Air Force | Broadband patch/slot antenna |
| EP0989627B1 (en) * | 1998-09-21 | 2002-11-13 | Huber+Suhner Ag | Dual frequency antenna |
| US6014105A (en) * | 1999-01-19 | 2000-01-11 | The United States Of America As Represented By The Secretary Of The Navy | Microstrip antenna having an internal feed |
| AU6210700A (en) * | 1999-08-18 | 2001-03-13 | Ericsson Inc. | A dual band bowtie/meander antenna |
-
2001
- 2001-04-06 US US09/828,533 patent/US6429819B1/en not_active Expired - Lifetime
-
2002
- 2002-04-04 WO PCT/IB2002/002655 patent/WO2002082667A2/en not_active Application Discontinuation
- 2002-04-04 KR KR10-2003-7013065A patent/KR20030090716A/en not_active Application Discontinuation
- 2002-04-04 CN CNB028094220A patent/CN100474695C/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101453054B (en) * | 2007-12-06 | 2012-10-24 | 智易科技股份有限公司 | Construction for dual symmetrical antenna |
| CN103259087A (en) * | 2013-05-07 | 2013-08-21 | 西安电子科技大学 | L/C dual-waveband co-aperture antenna based on frequency selective surface |
| CN103259087B (en) * | 2013-05-07 | 2015-04-08 | 西安电子科技大学 | L/C dual-waveband co-aperture antenna based on frequency selective surface |
Also Published As
| Publication number | Publication date |
|---|---|
| KR20030090716A (en) | 2003-11-28 |
| WO2002082667A2 (en) | 2002-10-17 |
| US6429819B1 (en) | 2002-08-06 |
| WO2002082667A3 (en) | 2004-05-27 |
| CN100474695C (en) | 2009-04-01 |
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